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Lintel Mar 30 - Apr 5 25 questions
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Monday 30 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    58000000

    Answer: 5.8 × 107
  2. 2. Algebra

    Factorise: x² - 6x + 8

    Answer: (x - 4)(x - 2)
  3. 3. Geometry

    Adjacent = 25cm, angle = 51°. Find opposite

    Answer: 30.9cm
  4. 4. Ratio

    Simplify: 6:10:6

    Answer: 3:5:3
  5. 5. Statistics

    Calculate the mean of: 30, 19, 12, 14, 20, 38

    Answer: 22.2

Tuesday 31 March 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.00047

    Answer: 4.7 × 10-4
  2. 2. Algebra

    Factorise: x² + x - 2

    Answer: (x + 2)(x - 1)
  3. 3. Geometry

    Hypotenuse = 15cm, angle = 45°. Find adjacent side

    Answer: 10.6cm
  4. 4. Ratio

    Simplify: 4:4:10

    Answer: 2:2:5
  5. 5. Statistics

    The mean of 4 numbers is 23. If 3 of them are 25, 26, 18, what is the missing number?

    Answer: 23

Wednesday 1 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    12000

    Answer: 1.2 × 104
  2. 2. Algebra

    Factorise: x² + 4x - 12

    Answer: (x + 6)(x - 2)
  3. 3. Geometry

    Hypotenuse = 25cm, angle = 64°. Find adjacent side

    Answer: 11cm
  4. 4. Ratio

    Simplify the ratio 4m:400cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 5 numbers is 33. If 4 of them are 32, 24, 46, 45, what is the missing number?

    Answer: 18

Thursday 2 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    0.032

    Answer: 3.2 × 10-2
  2. 2. Algebra

    Factorise: x² - 9x + 20

    Answer: (x - 5)(x - 4)
  3. 3. Geometry

    Adjacent = 23cm, angle = 49°. Find opposite

    Answer: 26.5cm
  4. 4. Ratio

    Simplify the ratio 2m:200cm

    Answer: 1:100
  5. 5. Statistics

    The mean of 6 numbers is 35. If 5 of them are 24, 47, 33, 42, 18, what is the missing number?

    Answer: 46

Friday 3 April 2020

Keystones #1 · Five questions · Open this day only

  1. 1. Number

    98000000

    Answer: 9.8 × 107
  2. 2. Algebra

    Factorise: x² + 6x - 16

    Answer: (x + 8)(x - 2)
  3. 3. Geometry

    Hypotenuse = 19cm, angle = 41°. Find adjacent side

    Answer: 14.3cm
  4. 4. Ratio

    Simplify the ratio 7m:700cm

    Answer: 1:100
  5. 5. Statistics

    Calculate the mean of: 36, 5, 38, 40, 36, 27, 21

    Answer: 29